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This study investigates whether effective question writing reduces the effect of pictures presented with a question. The study contains two measures:

In the first measure respondents were randomly assigned to one of nine experimental conditions (3 x 3), thus varying both pictures and verbal instructions.

In the second measure verbal instructions were kept identical to wave I, whereas respondents were again randomly assigned to one of three picture-conditions.

In this study, the influence of verbal, numerical and visual language is tested on a five point scale. In August 2008, a questionnaire was administered to the LISS panel consisting of five questions measured on a five point scale. In September 2008, there was a follow-up survey with different visual heuristics. The aim of the surveys was to find out if the use of numbers and verbal labels reduces the effect of visual language.

In September 2008, a questionnaire was administered to the LISS panel consisting of five questions measured on a five point scale. There were 16 different groups, in which two visual heuristics were tested: ‘up means good’, and ‘like means close’. For each heuristic, verbal labels (polar point vs fully labeled), numbers (added or not) and visual language such as color was varied. The aim of the survey was to find out if the use of numbers and verbal labels reduces the effect of visual language. In August 2008, a similar questionnaire was conducted in the LISS panel testing different visual heuristics (Heuristics I).

This is the fourth wave of the LISS Core Study module called 'Social Integration and Leisure'

A study about local elections and opinions about local politics, administered to the LISS panel in 2016.

This questionnaire concerns the measurement of the degree of prudence and temperance of respondents by observing several choices between lotteries. The questionnaire consisted of 25 tasks, divided into four parts. Each task involved a virtual throw of the dice, and the result of a throw always resulted in a certain behavior. A throw alternately involved one, two or three dice. Respondents were required to choose between two 'games'. The possible results of the two games always differed. Depending on the condition to which respondents were assigned the amounts were low, normal, or high and depending on the condition respondents were promised and awarded prizes or such prizes were neither promised nor awarded.